Vaporizing manifold



March 26,1929; PETIT 1,706,860 4 VAPORI ZING MANIFOLD Filed April 22,1927 5 Sheets-Sheet 1 f/ENR 25. F: 777' 11v VENTOR BY A TTORNEY March26,1929. H. ,3, E 1,706,860

VAP ORI Z I NG MANIFOLD Filed April 22, 192'! s sheets-sheet 2 11vVENTOZ 4 BY I! I A TTORNEY March 26, 1929. H. B. PETIT VAPORIZINGMANIFOLD Filed April 22, 1927 s Sheets-Sheet HE/vR YB 5777.

INVENTOR.

I ATTORNEY.

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Patented Mar. 26, 19239.

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HENRY IB. PETIT, OF DETILOIT, MICHIGAN, ASEZIGNOB TO C-i-TLORG-lil M.HOLLEY, OF

' DETROIT, IVIFJIGI-IIGAII.

V'APOLRIEING MANTFOLD.

Application filed iipril 22,

The object of this patent is to improve the heat control of avaporizerintended to be used in conjunction with internal combustionengines. It has heretofore been found extremely diiiicult to get anyadequate control of the heat. The most that could be accomplished was tovary the ultimate mixture ten perature 10 or 20 F., which is not asuificiently large dili'erence to take care of changes in theatmospheric temperature of over 100 F, which change is not at allunusual.

The specific object of this invention is to improve Vaporizers of thetype shown in Patents #1: 1,562,67 O and ltl,5l7,4l7 l-, in which a richmixture is drawn over a relatively thin metal plate surface which isheated on the other side by the exhaust gases.

Figure 1 she the manifold in elevation.

Figure 2 shows a cross sectional elevation on the plane 22 of Figure 1.

Figure 3 shows an elevation of Figure 2.

Figure 4 shows a cross sectional plan View on plane 4- l of Figure 1.

Figure 5 shows a cross sectional plan view onplane 55 of Figure 1.

Figure 6 shows a cross sectional elevation on the plane 2-2 of Figure 3,showing the upper part of the mixing chamber. This view illustrates themixing chamber in use on Fordson tractors.

In the figures, A is the exhaust manifold, cast integral with which isthe inlet manifold B. An opening O is provided in the exhaust manifoldwhich is covered by a hollow cover C. This cover is provided with anoutlet 1) which COITGSPOHLlS to the outlet 36 of the Patent $51,562,670,and through 'which a heated rich mixture is drawn into the inletmanifold of the engine through the pipe T, the rich mixture enteringinto the mixing chamber S through the outlet U. The mix ture outlet iscontrolled by the throttle valve- V and the cold air is admitted throughthe pipe W. An automatic valve X corresponding to the valve 39 of Welchis provided in the entrance, being diluted enroute by the addition ofthe main air which is unheated in the mixing chamber.

E the outlet from the exhaust manifold which is controlled by a throttlevalve F. G is the exhaust bypass formed in the hollow covert). H J aretwo sheet steel plates clamped between theenhaust manifold A and thecover C. A partition K is provided in 1%37. Serial llo. 185,692.

exhaust to follow the path, shown by the arrows in Figure 2, when thethrottle F is closed. illiquid fuel is admitted to the path between thetwo plates iii and J through a nozzle (not shown) 'which projectsthrough the opening l). The nozzle is fed from. a float c amber (notshown) which is bolted to the .r G by the to} 1d, holes Q, Q. rrir foraspirating this fuel is admitted through the I tube M, whichcommunicates with the horizontal passage N, which passage communicateswith the narrow space between d and H. The passage Gr communicatesthrough a portf? with the exhaust outlet E on ti 3 atmospheric side ofthe butterfly valve F, thus on closing the valve F the passage G formsan auxiliary path through which the exhau t gases can escape to theatmosphere and at intermediate position of F it forms an auxiliary path.

Operei'iora-i l hmi the engine is first started the valve F is closed,thereby causing the exhaust gases to follow the path indicated by thearrows in F igure 2. Exhaust gases therefore are diverted by thepartition K-in the direction of the valve F and are then caused to backup and flow on the other side of K, past the plate J and then through Gand back to the outlet F.

l/Vhcn the engine warms up the throttle F is opened gradually and theexhaust gases are thereby permitted to escape more and more directlythrough the outlet E. (living to the pulsating nature of the flow of theexhaust gases, liOWUVOI', the heating effect on the plates .l and H,upon the fuel passing from ll up between the plates, is never whollyelimi-' nated, because exhaust gases always back up into the passage G,for example, and also between J and K. The heating eifect of course isgreatly diminished and thus an effective heat control is secured.

What I claim is l. A vaporizing manifold comprising an exhaust manifold,a partition therein, an opening}; therein opposite said partition, acover forming a closure therefor, a vaporizing element interposedbetween said cover and said opening, a fuel and air entrance thereto anda vapor outlet therefrom, said cover having an exhaust bypasstherethrough adaptedto heat one side of the vaporizing metal element, anexhaust outlet from the manifold, a passage through which the e):-

the exhaust manifold A which causes thehaust gases discharge from thecover to the outlet, a'valzve cooperating with said parti- 7 tionlocated in the exhaust outlet on the engine side of the bypass outletand adapted in one; position to force the exhaust gases to flow on bothsides of the vaporizing"element,

and adapted inianother position to permit the exhaust gases to escapedirectly. to the exhaust outlet. v

2. A vapor-12mg manifold comprising an exhaust man1fold,-af partitiontherein, an

' openin therein opposite said partition, a

cover forming a closure'therefor, avaporizing element'interposed betweensaid cover and said opening, comprising two parallel 7 platesseparatedfrom each, other, a fuel and air entrance thereto and a vapor outlettherefrom, said cQVer-having an exhaust, bypass to the outlet, tovalve-co-operating with said partition located in the exhaust outlet onthe engineside of the bypass outlet and adapted V in one position toforce the exhaust gases to flow on both sides'o-f the vaporizingelement,

and adapted in another position to permit the exhaust gases to escapedirectly to the exhaust outlet.

3. A vaporizingmanifold comprising an exhaust manifold, a partitiontherein, an opening therein opposite said partition, a cover forming aclosure therefor, a vaporizing element interposed between said cover andsaid opening, comprising two thin parallel metal plates separated fromeach other, a fuel andair entrance thereto and a vapor outlet therefrom,said cover having an exhaust bypass theretl'irough adapted to heat onesideof the vaporizing metal element, an exhaust outlet from themanifold, a passage through which the exhaust gases discharge from thecover to the outlet, a valve eo-operating with said partition located inthe exhaustoutlet on the engine side of the bypass outlet and adapted inone position to force the exhaust gases to flow on both sides of the'apori zingelement, and adapted in another position to permit theexhaust gases to escape directly to the exhaust outlet.

In testimony whereof I aflix my signature.

